Songbird/Qatar: vote of confidence

London’s financial districts, old and new, have received a vote of confidence. Two of the capital’s most prestigious office complexes are getting powerful new investors. UK property group British Land is selling half of its central-London Broadgate development, home of Swiss bank UBS among others, to US buyout firm Blackstone. Meanwhile, the owner of Canary Wharf to the east of the capital has won support for a supersized share issue from two of the world’s largest sovereign wealth funds. The d...